JPS59180901A - Illuminator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] For example, sports equipment used in television studios, theaters, etc.
The light control body used as a focusing lens such as a Fresnel lens or a convex lens is used in the light. Since this type of light control body reaches a high temperature of about 200° C. due to the heat generated from the lamp disposed inside the lamp body, it is generally made of glass. However, glass is heat resistant,
Although it has excellent mechanical strength, weather resistance, and transparency, it is inferior in formability of light control surfaces, especially prisms, so light controllability is the key point. For this reason, when a clear outline of the spot is required, a Fresnel lens cannot be used, and a plano-convex lens that is polished after molding is used. 9, it is extremely heavy and difficult to handle.

For these reasons, it has been proposed to use synthetic resin such as polycarbonate, which has relatively high mechanical strength, excellent prism force and other formability, good light controllability, and external heat resistance, for example, polycarbonate. However, this product has a heat resistance of 150
It can only withstand temperatures of around 200°C and cannot be used in spotlights that can reach temperatures of about 200°C.

In view of the above, it has been proposed to use silicone resin, which has excellent heat resistance and excellent moldability to realize precise light control. However, silicone resin has flexibility and is easily deformed, making it difficult to use it as a light control material. To overcome this problem, a light control body has been proposed in which deformation is prevented by bonding a light control member made of silicone resin to a substrate made of glass with an adhesive.

However, the adhesive used to bond the light control member made of silicone resin and the substrate made of glass generally has poor heat resistance, and if used in a place where the temperature reaches about 200°C, the adhesive will be damaged. There are disadvantages such as deterioration such as yellowing, poor transparency, and force that makes it easy to peel off.

[Purpose of the invention]

The present invention was developed in consideration of the above-mentioned circumstances, and has a light control body that does not change transparency, effectively prevents deformation, and allows easy installation of the light control body on the lamp body. The purpose is to provide a lighting device.

[Summary of the invention]

Next, the present invention will be explained in detail. A light control body has been proposed, in which a light control member is molded from silicone resin, and this light control member is adhered from glass to a substrate to prevent deformation, and some of the light control members are put into practical use. .

However, a light control body constructed by bonding a light control member made of silicone resin and a glass substrate with an adhesive has some practical problems as described above.

However, silicone resin is a material that has excellent heat resistance and excellent moldability for light control surfaces, especially prisms. Therefore, the present invention was developed based on the knowledge that silicone resin can be fully utilized as a light control material as long as it can prevent deformation due to flexibility and can be easily attached to a lamp body.

The present invention consists of a light control member made of silicone resin having one side of its body formed as a light control surface and the other surface formed as a flat surface; A groove, and a mounting member in which the annular part is fitted into the circumferential groove, and a pair of operating parts made of an annular elastic body with the middle of the annular part spaced apart by 1 are provided. The cylindrical light control body is installed on the lamp body in the direction in which the annular part is compressed in the direction that the diameter of the annular part is reduced.
It is characterized in that the edge 91 is brought into pressure contact with the inner surface of the part for attaching the light control body, so that the light control body is added to the part for attaching the light control body.

According to the present invention, by attaching the light control body including the light control member made of silicone resin directly to the light control part of the lamp body, deformation can be effectively prevented and the light control body can be used as a light control body. It can be used satisfactorily. Furthermore, the attachment of the light control body to the light control body part can be easily carried out by utilizing the flexibility of the silicone resin and the elastic force of the member, making it easy to replace the light control body.

In the present invention, the light control surface of the light control member can be formed of a light control surface of a light control member, but for example, it can be formed by forming a Fresnel lens surface or a plano-convex lens surface consisting of a group of prisms.

[Embodiments of the invention].

Next, embodiments of the present invention will be described with reference to the drawings. 1
1 is a lamp body, and this lamp body 1 is formed with a light projecting portion 2 on the front surface, and a light source 3 is disposed inside. Reference numeral 4 denotes a light control body mounting part, and this light control body mounting part 4 is formed in a cylindrical shape on the light projecting part Z side facing the light source 3. Reference numerals 1 and 5 are light control bodies, and this light control body mounting part 4 is formed in a cylindrical shape on the light projecting part Z side facing the light source 3. The body 5 includes a light control member 8 made of a silicone resin having transparency, heat resistance, and flexibility and having a light control surface 6 formed on one side and a flat surface 7 on the other side, and a light control member 8 formed with a flat surface 7 on the other side. A pair of sweeping parts 11 and 11 are formed by separating the circumferential groove 9 formed on the side periphery and the middle of the annular part 10 from the annular elastic body, and the annular part 10 is fitted into the circumferential groove 9. The installation is done using component 1.
It is formed by 2. The light control member 8 is formed in the shape of a disk with a diameter of 200 m+++ and a thickness of 2 mm, for example, and the negative light control surface 6 is formed into a Fresnel lens surface by a group of concentric prisms 13. There is. A peripheral wall 14 having a U-shaped cross section is integrally formed on the peripheral edge of the light controlling member 8 on the side of the flat surface 7, and a concave portion of the peripheral wall 14 is formed in the circumferential groove 9. In addition, in the special issue, the member 12 fits its annular portion 10 into the circumferential groove 9, causes the operating portion 11.11 to protrude outward, and suppresses the operating sound l511.11 by compressing the annular portion 10 in the direction of reducing its diameter. ) To attach the light control member 8, insert the light control member 8 inside the part 4 and release the operating part 11. The light blocking body attachment is formed so as to be attached to the portion 4. When removing the light control member 5 from the light control member mounting portion 4, attach the light control member 5 by operating the operation portions 11, 11 of the member 12 in the direction in which the diameter of the annular portion 10 is reduced. The pressure-welded state is released and it can be removed.

Next, 15 is a reflecting plate.

According to the embodiments of the present invention described above, since the light control part of the light control body is made of silicone resin, it has excellent transparency, heat resistance, and flexibility, which are the characteristics of this resin. Moreover, since the light control surface, especially the prism, has excellent moldability, light control performance can be improved.

Furthermore, the light control body is provided with an annular 'fP, +1 member made of a protective body around the periphery of the light control member. Since it is installed with a lever, it can be easily installed using the flexibility of silicone resin, making it easy to operate and
Mechanical strength can be improved.

〔Effect of the invention〕

As detailed above, in the present invention, the light control body is made of silicone resin7, and the light control body is attached to the lamp body in a pressure-contact manner using a member with an annular shape. Even during use, the transparency is impaired and installation can be easily done by operating the operating section of the member.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which FIG. 1 is a perspective view of a light control body, and FIG. 2 is a cross-section of a lighting fixture. 1... Lamp body, 3... Light source 4 Lens extra edition, 5... Light control body 8 Light control member, 6... Light control surface 7, flat surface, 9 - Circumferential groove 12... Installation Components, 11, 1.1... Operating unit Patent applicant Toshiba Electric Materials Co., Ltd. agent Patent attorney Ono 1) Yoshihiro -';

Claims (3)

[Claims] (1) A lighting body, a light source disposed within the lighting body, a cylindrical light control body mounting portion provided on the lamp body facing the light source, and a light control body mounting portion. and a light control body attached to the part, the light control body having a light control surface made of a silicone resin having transparency, heat resistance, and flexibility, and the other surface formed as a flat surface. (9) A light control member, a circumferential groove provided on the periphery of the flat surface side of the light control member, and a pair of operation parts separated from each other in the middle of the annular part made of an annular elastic body. Fit the light control member into the circumferential groove and move the operating part in the direction in which the annular part is reduced in diameter. A lighting device comprising: a mounting member whose side edge is pressed into contact with the inner surface of the light control member; (2) The lighting device according to claim (1), wherein the light control surface of the light control body is formed on a Fresnel lens surface. (3) The lighting device according to claim (1), wherein the light control surface of the light control body is formed as a convex lens surface.